A motor control device of the present invention is applied in a configuration in which a plurality of synchronous motors mechanically connected in parallel with each other are driven by means of a single power converter, and is provided with a vector control unit 110 and an abnormality detection unit 120. The vector control unit 110 divides currents flowing in and out of a plurality of synchronous motors 201a, 201b, 201c, 201d into a q-axis current and a d-axis current and controls the q-axis current and the d-axis current on the basis of a q-axis current command value iq* and a d-axis current command value id*, respectively. The abnormality detection unit 120 detects, on the basis of a q-axis inductance Lq, the q-axis current command value iq*, a synchronous motor rotation speed ω, and a d-axis voltage command value vd*, whether or not erroneous wiring or a disconnection is present in at least one synchronous motor among the plurality of synchronous motors 201a, 201b, 201c, 201d.